GeForce GTX 460 (OEM) vs Radeon RX 580

Intro

Compare all that to the Radeon RX 580, which has a core clock speed of 1257 MHz and a GDDR5 memory speed of 2000 MHz. It also makes use of a 256-bit memory bus, and uses a 14 nm design. It is made up of 2304 SPUs, 144 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 (OEM)		150 Watts
Radeon RX 580		185 Watts
	Difference: 35 Watts (23%)

Memory Bandwidth

Theoretically, the Radeon RX 580 should be a lot faster than the GeForce GTX 460 (OEM) overall. (explain)

Radeon RX 580		262144 MB/sec
GeForce GTX 460 (OEM)		108800 MB/sec
	Difference: 153344 (141%)

Texel Rate

The Radeon RX 580 is quite a bit (about 397%) more effective at anisotropic filtering than the GeForce GTX 460 (OEM). (explain)

Radeon RX 580		181008 Mtexels/sec
GeForce GTX 460 (OEM)		36400 Mtexels/sec
	Difference: 144608 (397%)

Pixel Rate

The Radeon RX 580 should be much (more or less 93%) more effective at FSAA than the GeForce GTX 460 (OEM), and should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon RX 580		40224 Mpixels/sec
GeForce GTX 460 (OEM)		20800 Mpixels/sec
	Difference: 19424 (93%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.